save project

diy.py

 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
+# a=open(r"C:\Users\Administrator\Desktop\sg.txt","w",encoding="utf-8")
+
+# a.write('小丽：11本\n')
+# a.write('李文：9本\n')
+# a.write('张伟：16本\n')
+# a.close()
+
+
+
+# a=open(r"C:\Users\Administrator\Desktop\sg.txt",'a',encoding="utf-8")
+# a.write('小兰：12本\n')
+# a.close()
+# with open(r"C:\Users\Administrator\Desktop\sg.txt","a",encoding="utf-8") as a:
+#     a.write('小兰：12本\n')
+b=""
+with open(r"C:\Users\Administrator\Desktop\sg.txt","r",encoding="utf-8") as a:
+    # e=a.read()
+    for i in a:
+        # print(i)
+        if "小兰：12本" in i:
+            i=i.replace("小兰：12本","小兰：32本")
+          
+        b+= i
+    print(b)   
+with open(r"C:\Users\Administrator\Desktop\sg.txt","w",encoding="utf-8") as a:
+    a.write(b)
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